Imekyuri kwiTuna: Ngaba le ntlanzi ikhuselekile ukuba ingatyiwa?

Umxholo

• Intro
• Ungcoliseke Kangakanani?
• Amanqanaba kwiindidi ezahlukeneyo
• Imilinganiselo yesalathiso kunye namanqanaba akhuselekileyo
• Ubungozi bokuboniswa kweMercury
• Kufuneka utye kangaphi?
• Abanye abantu bafanele bayiphephe ityhuna
• Umgca osezantsi

Intro

I-Tuna yintlanzi yetyuwa yasemanzini ityiwa kwihlabathi liphela.

Iyondleke ngokumangalisayo kwaye ingumthombo omkhulu weprotheni, i-omega-3 fatty acids kunye neevithamini ze-B. Nangona kunjalo, inokuqulatha amanqanaba aphezulu e-mercury, isinyithi esinetyhefu enzima.

Iinkqubo zendalo-ezinje ngokuqhuma kwentaba-mlilo- kunye nemisebenzi yezamashishini- njengokutsha kwamalahle- ikhupha i-mercury emoyeni okanye ngqo elwandle, apho ke iqalisa ukwakha kubomi baselwandle.

Ukutya i-mercury eninzi kunxulunyaniswa nemicimbi yezempilo, ukuphakamisa inkxalabo malunga nokutya ityhuna rhoqo.

Eli nqaku liphonononga i-mercury kwi-tuna kwaye likuxelele ukuba kukhuselekile ukutya le ntlanzi.

Ungcoliseke Kangakanani?

I-Tuna iqulethe i-mercury ngakumbi kunezinye izinto ezithandwayo zaselwandle, kubandakanya isalmon, iimbatyisi, ilobster, iscallops kunye ne-tilapia ().

Kungenxa yokuba ityhuna itya iintlanzi ezincinci esele zingcolisiwe ngamanani ahlukeneyo e-mercury. Kuba i-mercury ayikhutshelwa ngokulula, iyakha kwizicubu zetyhuna ngokuhamba kwexesha (,).

Amanqanaba kwiindidi ezahlukeneyo

Amanqanaba e-mercury kwiintlanzi alinganiswa ngamalungu ngesigidi (ppm) okanye ii-micrograms (mcg). Nazi iintlobo ezithile zetyhuna kunye ne-mercury concentrations ():

Imilinganiselo yesalathiso kunye namanqanaba akhuselekileyo

I-Arhente yokuKhuselwa kokusiNgqongileyo e-US (i-EPA) ithi i-0.045 mcg ye-mercury iponti nganye (i-0.1 mcg nge-kg) yobunzima bomzimba ngosuku lelona dose liphezulu le-mercury. Le mali yaziwa njenge-dose reference (4).

Idosi yereferensi yakho yemihla ngemihla ye-mercury ixhomekeke kubunzima bomzimba wakho. Ukuphindaphinda elo nani ngesixhenxe kukunika umda wakho we-mercury ngeveki.

Nayi eminye imizekelo yeedosi ekubhekiswa kuzo ezisekwe kubunzima bomzimba obahlukeneyo:

Kuba ezinye iintlobo zetyhuna ziphezulu kakhulu kwimekyuri, i-ounce enye (85-gram) enye inokuba ne-mercury concentration elingana okanye edlula idosi yesalathiso yeveki yomntu.

I-Tuna iphezulu kwi-mercury xa kuthelekiswa nezinye iintlanzi. Ukusebenza kube kanye kweentlobo ezithile zetyhuna kunokugqitha kwelona xabiso liphezulu lemekyuri onokuyisebenzisa ngokukhuselekileyo ngeveki.

Ubungozi bokuboniswa kweMercury

I-Mercury kwi-tuna yinkxalabo yezempilo ngenxa yomngcipheko onxulunyaniswa nokuvezwa kwemekyuri.

Njengokuba i-mercury yakha kwiithishu zentlanzi ekuhambeni kwexesha, inako ukuqokelela emzimbeni wakho. Ukuvavanya ukuba ingakanani i-mercury esemzimbeni wakho, ugqirha unokuvavanya ukugxila kwe-mercury kwizinwele nasegazini lakho.

Amanqanaba aphezulu okuvezwa kwemekyuri kunokukhokelela ekufeni kweseli kwengqondo kwaye kunokubangela ukungaziphathi kakuhle izakhono zemoto, inkumbulo kunye nokugxila ().

Kwisifundo esinye kubantu abadala abali-129, abo banezinga eliphezulu leemekyuri baqhube kakubi kakhulu kwiimoto, iingcinga kunye novavanyo lwenkumbulo kunabo babenamanqanaba asezantsi e-mercury ().

Ukuvezwa kwemekyuri kunokukhokelela kuxinzelelo kunye noxinzelelo.

Isifundo kubantu abadala esibonakaliswe kwimercury emsebenzini sifumanise ukuba banamava oxinzelelo kunye neempawu zoxinzelelo kwaye bacotha ekuqhubeni ulwazi kunabathathi-nxaxheba kulawulo ().

Ekugqibeleni, i-mercury buildup inxulumene nomngcipheko ophezulu wesifo senhliziyo. Oku kunokuba ngenxa yendima ye-mercury kwi-fat oxidation, inkqubo engakhokelela kwesi sifo ().

Kwisifundo esingaphezulu kwamadoda ayi-1,800, abo batya ezona ntlanzi zininzi kwaye babenezona ndawo zigcweleyo ze-mercury babephindwe kabini ukuba bafe ngenxa yokuhlaselwa sisifo sentliziyo kunye nesifo sentliziyo ().

Nangona kunjalo, olunye uphando lubonisa ukuba ukubonakaliswa okuphezulu kwe-mercury akuhambelani nomngcipheko wesifo sentliziyo kwaye izibonelelo zokutya iintlanzi kwimpilo yentliziyo zinokugqitha imingcipheko yokufaka i-mercury ().

Imercury sisinyithi esinzima esinokubangela iziphumo ezibi empilweni. Ukugxininiswa okuphezulu kwemekyuri ebantwini kunokubangela imiba yobuchopho, impilo enkenenkene yengqondo kunye nesifo sentliziyo.

Kufuneka utye kangaphi?

I-Tuna inesondlo ngendlela emangalisayo kwaye igcwele iiprotheyini, amafutha asempilweni kunye neevithamini- kodwa akufuneki ityiwe yonke imihla.

I-FDA icebisa ukuba abantu abadala batye ii-ounces ezingama-3-5 (85-140 gram) zentlanzi amaxesha ama-2-3 ngeveki ukufumana i-omega-3 fatty acids eyaneleyo kunye nezinye izakha-mzimba eziluncedo ().

Nangona kunjalo, uphando lubonisa ukuba ukutya iintlanzi rhoqo nge-mercury concentration kune-0.3 ppm kunokunyusa amanqanaba egazi le-mercury kunye nokukhuthaza imiba yezempilo. Uninzi lweentlobo zetyhuna zigqithile kweli xabiso (,).

Ke ngoko, uninzi lwabantu abadala kufuneka bayitye ityhuna ngokumodareyitha kwaye baqwalasele ukukhetha ezinye iintlanzi eziphantsi kakhulu kwimekyuri.

Xa uthenga ityhuna, khetha i-skipjack okanye iintlobo zokukhanya ezikhonkxiweyo, ezingafakwanga imercury eninzi njengealbacore okanye ibigeye.

Ungayitya i-skipjack kunye ne-tuna ekhanyayo enkonkxiweyo kunye nezinye iintlobo ze-mercury ezisezantsi, ezinje nge-cod, unonkala, isalmon kunye ne-scallops, njengenxalenye yesindululo se-2-3 seentlanzi ngeveki ().

Zama ukukuphepha ukutya i-albacore okanye i-yellowfin ityhuna ngaphezulu kwesinye ngeveki. Yeka kwi-tuna ye-bigeye kangangoko kunokwenzeka ().

I-skipjack kunye ne-tuna ekhanyayo enkonkxiweyo, ephantsi kwi-mercury, inokudliwa njengenxalenye yokutya okunempilo. Nangona kunjalo, i-albacore, i-yellowfin kunye ne-tuna ye-bigeye ziphezulu kwi-mercury kwaye kufuneka zinqunyelwe okanye zithintelwe.

Abanye abantu bafanele bayiphephe ityhuna

Abanye abantu bachaphazeleka ikakhulu kwimekyuri kwaye kufuneka banciphise okanye bayeke ngokupheleleyo ityhuna.

Oku kubandakanya iintsana, abantwana abancinci kunye nabasetyhini abakhulelweyo, ukuncancisa okanye ukucwangcisa ukukhulelwa.

Ukuvezwa kweMercury kunokuchaphazela ukukhula kombungu kwaye kunokukhokelela kwingqondo nakwimicimbi yophuhliso.

Kwisifundo esimalunga ne-135 yabasetyhini kunye neentsana zabo, nganye ippm eyongezelelweyo ye-mercury edliwe ngabafazi abakhulelweyo ibibotshelelwe ekwehliseni amanqaku angaphezu kwasixhenxe kumanqaku ovavanyo lweengqondo zabantwana babo ().

Nangona kunjalo, uphononongo luqaphele ukuba iintlanzi eziphantsi kwe-mercury zinxulunyaniswa namanqaku okungcono kwengqondo ().

Abasemagunyeni kwezempilo ngoku bacebisa ukuba abantwana, abasetyhini abakhulelweyo kunye noomama abancancisayo kufuneka banciphise ukutya ityhuna kunye nezinye iintlanzi ze-mercury ephezulu, endaweni yoko bejolise kwi-2-3 yeentlanzi ze-mercury ephantsi ngeveki (4,).

Iintsana, abantwana kunye nabasetyhini abakhulelweyo, ukuncancisa okanye ukuzama ukukhulelwa kufuneka banciphise okanye bathintele ityhuna. Nangona kunjalo, banokufumana inzuzo ngokutya iintlanzi ezisezantsi.

Umgca osezantsi

Ukuvezwa kweMercury kunxulunyaniswe nemicimbi yezempilo kubandakanya ukungasebenzi kakuhle kwengqondo, uxinzelelo, uxinzelelo, isifo sentliziyo kunye nokukhula kakuhle kosana.

Nangona ityhuna isondlo kakhulu, ikwimo ephezulu yemekyuri xa kuthelekiswa nezinye iintlanzi.

Ke ngoko, kufuneka ityiwe ngokumodareyitha-hayi yonke imihla.

Ungayitya i-skipjack kunye ne-tuna ekhanyayo enkonkxiweyo ecaleni kwezinye iintlanzi eziphantsi kwe-mercury amaxesha ambalwa ngeveki, kodwa kufuneka uthintele okanye uphephe i-albacore, i-yellowfin kunye ne-tuna ye-bigeye.